Puff of white smoke at start up

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11-18-14, 05:52 PM

shaft

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Puff of white smoke at start up

This is in regards to a 1999 LS400 with 150K miles.

I've read a bunch of posts about steering fluid getting sucked up into the intake and getting burned during start up for 1990 - 1994 cars.

Does this still hold true for my 1999 LS400? If so, is it the same fix? I have no issues with power steering.

If not please let me know what is wrong or how I can fix it?

Last edited by shaft; 11-18-14 at 06:17 PM.

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11-19-14, 04:05 AM

shaft

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Anybody please? I have not seen any reference regarding this issue on the 98-00 cars.

Last edited by shaft; 11-19-14 at 08:17 AM.

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11-19-14, 09:02 AM

YoshiMan

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I'm pretty sure the 98-00 models have that stupid valve on the p/s pump as well. I know my 95 does.

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11-19-14, 10:16 AM

timmy0tool

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yep 98-00 still have the air control valve. very likely PS fluid is leaking inside as with all white puff of smoke at startup cases. either bypass it or plug it up. o-ring replacement is just for leaks outside of the pump, not internal which causes the smoke.